<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: 'index' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item :to="{ path: 'goods' }">商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card class="box-card">
      <!-- 提示区域 -->
      <el-alert title="添加商品信息" type="info" center show-icon> </el-alert>
      <!-- 步骤条 -->
      <el-steps :space="200" :active="activeIndex - 0" finish-status="success">
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品照片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- tab栏 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="beforeTabLeave"
          @tab-click="tabClick"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" ype="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" ype="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                expandTrigger="hover"
                :props="cateProps"
                @change="handlechange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              v-for="item in manyTabledate"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <!-- 复选框 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  border
                  :label="items"
                  v-for="(items, key) in item.attr_vals"
                  :key="key"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTabledate"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              action="http://localhost:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :file-list="fileList"
              list-type="picture"
              :headers="headersObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">
                只能上传jpg/png文件，且不超过500kb
              </div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">商品属性</el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片展示 -->
    <el-dialog
      title="图片预览"
      :visible.sync="dialogVisible"
      width="50%"
    >
      <img :src="urlPath" style="width:100%" alt="">
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      activeIndex: "0",
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_number: 0,
        goods_weight: 0,
        goods_cat: [],
        pics: [],
      },
      addFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请选择商品分类", trigger: "blur" },
        ],
      },
      cateList: [],
      cateProps: {
        label: "cat_name",
        value: "cat_id",
        children: "children",
      },
      // 动态参数
      manyTabledate: [],
      // 静态参数
      onlyTabledate: [],
      headersObj: {
        Authorization: JSON.parse(localStorage.getItem("userinfo")).token,
      },
      urlPath: "",
      dialogVisible: false,
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    getCateList() {
      this.$Req.get("/categories").then((res) => {
        console.log(res);
        const { data, meta } = res.data;
        this.cateList = data;
        console.log(this.cateList);
      });
    },
    // 联机选择器变化触发的函数
    handlechange() {
      console.log(this.addForm.goods_cat);
      if (this.addForm.goods_cat.length !== 3) {
        return (this.addForm.goods_cat = []);
      }
    },
    // 页面离开时
    beforeTabLeave(activeName, oldActiveName) {
      console.log(activeName, oldActiveName);
      if (this.addForm.goods_cat.length !== 3 && oldActiveName === "0") {
        this.$message.error("请先选择分类");
        return false;
      }
    },
    tabClick() {
      // console.log(this.activeIndex);
      if (this.activeIndex === "1") {
        this.$Req
          .get(`/categories/${this.cateId}/attributes`, {
            params: { sel: "many" },
          })
          .then((res) => {
            const { data, meta } = res.data;
            data.forEach((item) => {
              console.log(item);
              item.attr_vals =
                item.attr_vals.length === 0 ? [] : item.attr_vals.split(",");
            });
            this.manyTabledate = data;
            console.log(data);
          });
      } else if (this.activeIndex === "2") {
        this.$Req
          .get(`/categories/${this.cateId}/attributes`, {
            params: { sel: "only" },
          })
          .then((res) => {
            console.log(res);
            const { data, meta } = res.data;
            this.onlyTabledate = data;
          });
      } else if (this.activeIndex === "3") {
        console.log(3);
      }
    },
    // 处理图片预览效果
    handlePreview(file) {
      this.urlPath = file.response.data.url;
      this.dialogVisible=true
    },
    // 处理移除照片操作
    handleRemove(file) {
      const filePath = file.response.data.tmp_path;
      const i = this.addForm.pics.findIndex((x) => {
        x.pic === filePath;
      });
      this.addForm.pics.splice(i, 1);
      console.log(this.addForm);
    },
    handleSuccess(res) {
      console.log(res);
      const PicInfo = {
        pic: res.data.tmp_path,
      };
      this.addForm.pics.push(PicInfo);
      console.log(this.addForm);
    },
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    },
  },
  mounted() {
    console.log();
  },
};
</script>

<style>
.el-steps {
  margin: 15px 0;
}
.el-step__main {
  text-align: center;
}
.el-main {
  line-height: 0;
}
</style>